AMD Radeon R9 285 to be launched on September 2?

VideoCardz reports AMD's Radeon R9 285 "Tonga" graphics card is expected to hit retail shelves on September 2nd. Some details about the card will be revealed during AMD's celebrating 30 years in graphics innovation event tomorrow but most details won't be made public until the launch date.

The event will likely cover more topics than just one mid-range GPU.
However, without a doubt, Tonga is a major part of it.
First to be released graphics card equipped with Tonga is called Radeon R9 285, and it will replace Radeon R9 280.
A month later Radeon R9 285X will be introduced, which will succeed R9 280X.

Both cards are expected to feature 256b memory bus. There are 2GB and 4GB variants in the making. R9 285 and R9 285X will likely differ in Stream Processor count. However, we have not yet confirmed how many cores card has (it is said that R9 285 has 1792 and 285X has 2048 though).